remove ccal

rfcs/rfc-001-smart-contracts-engine.md

@@ -101,8 +101,6 @@ void call(
     int num,
     uint8_t dirty[],        //dirty memory bits
     uint8_t *userdata,      //current transaction data
-    struct ccall ccalls[],  //expected output ccalls
-    int num_out_ccalls,
 );
 ```
 
@@ -116,10 +114,6 @@ Any transaction can then call `call` on the contract with a set of keys.  It's u
 
 The contract has read/write privileges to all the memory that is allocated.
 
-### CCall
-
-Within the `call` method, contracts can create their own `calls` to be scheduled in the future.
-
 ### Reduce
 
 Some operations on the contract will require iteration over all the keys.  To make this parallelizable the iteration is broken up into reduce calls which are combined.